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16. September 2025

New paper!

Emissions of the greenhouse gas nitrous oxide (N2O) strongly impact the carbon footprint of the wastewater sector due to their high global warming potential. The new paper by Ali Valipoor et al. provides a critical review of the treatment technologies currently available for emission abatement, with a particular focus on biological systems such as bioscrubbers.
Highlights:

Established physical–chemical N2O end-of-pipe air treatment technologies show limitations when implemented at WWTPs
Denitrifying bioscrubbers are a feasible option for treating N2O-rich exhaust air from sidestream treatment of WWTPs
Implementation of sidestream deammonification and treatment of exhaust air in the sidesstream can significantly reduce the overall N2O emission of a WWTP

For the full details of this comprehensive review: iwaponline

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